Android--2048游戏

一直想做游戏，先拿一个简单点的学习，写的代码分享出来，大神可以指点~

直接上代码：

<span style="font-size:12px;">import android.app.Activity;
import android.os.Bundle;
import android.view.Menu;
import android.widget.TextView;public class MainActivity extends Activity {public MainActivity() {mainActivity = this;}@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);tvScore = (TextView) findViewById(R.id.tvScore);}@Overridepublic boolean onCreateOptionsMenu(Menu menu) {// Inflate the menu; this adds items to the action bar if it is present.getMenuInflater().inflate(R.menu.main, menu);return true;}public void clearScore(){score = 0;showScore();}public void showScore(){tvScore.setText(score+"");}public void addScore(int s){score+=s;showScore();}private int score = 0;private TextView tvScore;private static MainActivity mainActivity = null;public static MainActivity getMainActivity() {return mainActivity;}}</span>

import java.util.ArrayList;
import java.util.List;import android.app.AlertDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.graphics.Point;
import android.util.AttributeSet;
import android.view.MotionEvent;
import android.view.View;
import android.widget.GridLayout;public class GameView extends GridLayout {public GameView(Context context, AttributeSet attrs, int defStyle) {super(context, attrs, defStyle);initGameView();}public GameView(Context context) {super(context);initGameView();}public GameView(Context context, AttributeSet attrs) {super(context, attrs);initGameView();}private void initGameView(){setColumnCount(4);setBackgroundColor(0xffbbada0);setOnTouchListener(new View.OnTouchListener() {private float startX,startY,offsetX,offsetY;@Overridepublic boolean onTouch(View v, MotionEvent event) {switch (event.getAction()) {case MotionEvent.ACTION_DOWN:startX = event.getX();startY = event.getY();break;case MotionEvent.ACTION_UP:offsetX = event.getX()-startX;offsetY = event.getY()-startY;if (Math.abs(offsetX)>Math.abs(offsetY)) {if (offsetX<-5) {swipeLeft();}else if (offsetX>5) {swipeRight();}}else{if (offsetY<-5) {swipeUp();}else if (offsetY>5) {swipeDown();}}break;}return true;}});}@Overrideprotected void onSizeChanged(int w, int h, int oldw, int oldh) {super.onSizeChanged(w, h, oldw, oldh);int cardWidth = (Math.min(w, h)-10)/4;addCards(cardWidth,cardWidth);startGame();}private void addCards(int cardWidth,int cardHeight){Card c;for (int y = 0; y < 4; y++) {for (int x = 0; x < 4; x++) {c = new Card(getContext());c.setNum(0);addView(c, cardWidth, cardHeight);cardsMap[x][y] = c;}}}private void startGame(){MainActivity.getMainActivity().clearScore();for (int y = 0; y < 4; y++) {for (int x = 0; x < 4; x++) {cardsMap[x][y].setNum(0);}}addRandomNum();addRandomNum();}private void addRandomNum(){emptyPoints.clear();for (int y = 0; y < 4; y++) {for (int x = 0; x < 4; x++) {if (cardsMap[x][y].getNum()<=0) {emptyPoints.add(new Point(x, y));}}}Point p = emptyPoints.remove((int)(Math.random()*emptyPoints.size()));cardsMap[p.x][p.y].setNum(Math.random()>0.1?2:4);}private void swipeLeft(){boolean merge = false;for (int y = 0; y < 4; y++) {for (int x = 0; x < 4; x++) {for (int x1 = x+1; x1 < 4; x1++) {if (cardsMap[x1][y].getNum()>0) {if (cardsMap[x][y].getNum()<=0) {cardsMap[x][y].setNum(cardsMap[x1][y].getNum());cardsMap[x1][y].setNum(0);x--;merge = true;}else if (cardsMap[x][y].equals(cardsMap[x1][y])) {cardsMap[x][y].setNum(cardsMap[x][y].getNum()*2);cardsMap[x1][y].setNum(0);MainActivity.getMainActivity().addScore(cardsMap[x][y].getNum());merge = true;}break;}}}}if (merge) {addRandomNum();checkComplete();}}private void swipeRight(){boolean merge = false;for (int y = 0; y < 4; y++) {for (int x = 3; x >=0; x--) {for (int x1 = x-1; x1 >=0; x1--) {if (cardsMap[x1][y].getNum()>0) {if (cardsMap[x][y].getNum()<=0) {cardsMap[x][y].setNum(cardsMap[x1][y].getNum());cardsMap[x1][y].setNum(0);x++;merge = true;}else if (cardsMap[x][y].equals(cardsMap[x1][y])) {cardsMap[x][y].setNum(cardsMap[x][y].getNum()*2);cardsMap[x1][y].setNum(0);MainActivity.getMainActivity().addScore(cardsMap[x][y].getNum());merge = true;}break;}}}}if (merge) {addRandomNum();checkComplete();}}private void swipeUp(){boolean merge = false;for (int x = 0; x < 4; x++) {for (int y = 0; y < 4; y++) {for (int y1 = y+1; y1 < 4; y1++) {if (cardsMap[x][y1].getNum()>0) {if (cardsMap[x][y].getNum()<=0) {cardsMap[x][y].setNum(cardsMap[x][y1].getNum());cardsMap[x][y1].setNum(0);y--;merge = true;}else if (cardsMap[x][y].equals(cardsMap[x][y1])) {cardsMap[x][y].setNum(cardsMap[x][y].getNum()*2);cardsMap[x][y1].setNum(0);MainActivity.getMainActivity().addScore(cardsMap[x][y].getNum());merge = true;}break;}}}}if (merge) {addRandomNum();checkComplete();}}private void swipeDown(){boolean merge = false;for (int x = 0; x < 4; x++) {for (int y = 3; y >=0; y--) {for (int y1 = y-1; y1 >=0; y1--) {if (cardsMap[x][y1].getNum()>0) {if (cardsMap[x][y].getNum()<=0) {cardsMap[x][y].setNum(cardsMap[x][y1].getNum());cardsMap[x][y1].setNum(0);y++;merge = true;}else if (cardsMap[x][y].equals(cardsMap[x][y1])) {cardsMap[x][y].setNum(cardsMap[x][y].getNum()*2);cardsMap[x][y1].setNum(0);MainActivity.getMainActivity().addScore(cardsMap[x][y].getNum());merge = true;}break;}}}}if (merge) {addRandomNum();checkComplete();}}private void checkComplete(){boolean complete = true;ALL:for (int y = 0; y < 4; y++) {for (int x = 0; x < 4; x++) {if (cardsMap[x][y].getNum()==0||(x>0&&cardsMap[x][y].equals(cardsMap[x-1][y]))||(x<3&&cardsMap[x][y].equals(cardsMap[x+1][y]))||(y>0&&cardsMap[x][y].equals(cardsMap[x][y-1]))||(y<3&&cardsMap[x][y].equals(cardsMap[x][y+1]))) {complete = false;break ALL;}}}if (complete) {new AlertDialog.Builder(getContext()).setTitle("你好").setMessage("游戏结束").setPositiveButton("重来", new DialogInterface.OnClickListener() {@Overridepublic void onClick(DialogInterface dialog, int which) {startGame();}}).show();}}private Card[][] cardsMap = new Card[4][4];private List<Point> emptyPoints = new ArrayList<Point>();
}

import android.content.Context;
import android.view.Gravity;
import android.widget.FrameLayout;
import android.widget.TextView;public class Card extends FrameLayout {public Card(Context context) {super(context);label = new TextView(getContext());label.setTextSize(32);label.setBackgroundColor(0x33ffffff);label.setGravity(Gravity.CENTER);LayoutParams lp = new LayoutParams(-1, -1);lp.setMargins(10, 10, 0, 0);addView(label, lp);setNum(0);}private int num = 0;public int getNum() {return num;}public void setNum(int num) {this.num = num;if (num<=0) {label.setText("");}else{label.setText(num+"");}}public boolean equals(Card o) {return getNum()==o.getNum();}private TextView label;
}

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"android:layout_width="match_parent"android:layout_height="match_parent"android:paddingBottom="@dimen/activity_vertical_margin"android:paddingLeft="@dimen/activity_horizontal_margin"android:paddingRight="@dimen/activity_horizontal_margin"android:paddingTop="@dimen/activity_vertical_margin"tools:context="com.example.a2048.MainActivity" android:orientation="vertical"><LinearLayout android:layout_width="fill_parent"android:layout_height="wrap_content"android:orientation="horizontal"><TextViewandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:text="@string/score" /><TextViewandroid:id="@+id/gameScore"android:layout_width="wrap_content"android:layout_height="wrap_content"/></LinearLayout><com.example.a2048.gameViewandroid:id="@+id/gameView"android:layout_width="fill_parent"android:layout_height="0dp"android:layout_weight="1"></com.example.a2048.gameView>
</LinearLayout>

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